Pumping device

Model of a wind powered pumping device, labeled "Model of vane to pull pumps at distances and depths. Invented by Jonas Adolph Norberg." The model may have been made after drawings of the French engineer Bernard Belidor in his book L'architecture hydraulique (1737). It is listed in the inventory of 1801, by Jonas Adolf Norberg.
This type of windmill works as follows: The wind sets the wings and the shaft in motion. The rotational motion of the shaft is converted to a reciprocating motion via a gear unit and a crank lever. The rods are attached to a piston rod that moves up and down inside a pole. The piston rod pushes down levers that activate four so-called lift pumps that can pump water from eg. a pond. The weather vane ensures that the wings align themselves with wind direction.